\begin{tikzpicture}

\definecolor{crimson2143940}{RGB}{214,39,40}
\definecolor{darkgray176}{RGB}{176,176,176}
\definecolor{darkorange25512714}{RGB}{255,127,14}
\definecolor{forestgreen4416044}{RGB}{44,160,44}
\definecolor{lightgray204}{RGB}{204,204,204}
\definecolor{steelblue31119180}{RGB}{31,119,180}

\begin{groupplot}[group style={group size=3 by 3}]
\nextgroupplot[
legend cell align={left},
legend style={fill opacity=0.8, draw opacity=1, text opacity=1, draw=lightgray204},
scaled x ticks=manual:{}{\pgfmathparse{#1}},
tick align=outside,
tick pos=left,
x grid style={darkgray176},
xmin=-0.3, xmax=6.3,
xtick style={color=black},
xticklabels={},
y grid style={darkgray176},
ymin=-1.8120665, ymax=2.5603856,
ytick style={color=black}
]
\addplot [very thin, steelblue31119180]
table {%
0 1
0.4 0.61740565
0.8 0.3130505
1.2 0.10914006
1.6 -0.0058952819
2 -0.05631935
2.4 -0.066894849
2.8 -0.0572966
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3.6 -0.024502778
4 -0.011971901
4.4 -0.0037732301
4.8 0.0007200945
5.2 0.0025846024
5.6 0.0028679369
6 0.0023800242
};
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legend cell align={left},
legend style={
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  text opacity=1,
  at={(0.5,0.91)},
  anchor=north,
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},
scaled x ticks=manual:{}{\pgfmathparse{#1}},
scaled y ticks=manual:{}{\pgfmathparse{#1}},
tick align=outside,
tick pos=left,
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xtick style={color=black},
xticklabels={},
y grid style={darkgray176},
ymin=-1.8120665, ymax=2.5603856,
ytick style={color=black},
yticklabels={}
]
\addplot [very thin, steelblue31119180]
table {%
0 1
0.4 0.97801623
0.8 0.78553462
1.2 0.433821
1.6 -0.037119868
2 -0.56173947
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4 -1.1910163
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5.2 1.0220561
5.6 1.7964952
6 2.3616378
};
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scaled x ticks=manual:{}{\pgfmathparse{#1}},
scaled y ticks=manual:{}{\pgfmathparse{#1}},
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tick pos=left,
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xticklabels={},
y grid style={darkgray176},
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ytick style={color=black},
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\addplot [very thin, steelblue31119180]
table {%
0 2
0.4 0.58385316
0.8 0.34635638
1.2 1.9601703
1.6 0.85449997
2 0.16092847
2.4 1.843854
2.8 1.1367372
3.2 0.04234052
3.6 1.6603167
4 1.4080821
4.4 3.9173605e-05
4.8 1.424179
5.2 1.6469193
5.6 0.037394134
6 1.1542514
};
\addlegendentry{LL}

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legend cell align={left},
legend style={
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  draw opacity=1,
  text opacity=1,
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},
scaled x ticks=manual:{}{\pgfmathparse{#1}},
tick align=outside,
tick pos=left,
x grid style={darkgray176},
xmin=-0.3, xmax=6.3,
xtick style={color=black},
xticklabels={},
y grid style={darkgray176},
ymin=-2.1214723, ymax=2.1962606,
ytick style={color=black}
]
\addplot [very thin, steelblue31119180]
table {%
0 2
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0.8 -0.71630084
1.2 1.2939053
1.6 0.18924524
2 -0.21735433
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2.8 0.62743797
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3.6 0.93829924
4 0.9104558
4.4 0.65840236
4.8 1.0369613
5.2 1.136098
5.6 1.0029278
6 1.2153595
};
\addlegendentry{LR}

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legend style={
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},
scaled x ticks=manual:{}{\pgfmathparse{#1}},
scaled y ticks=manual:{}{\pgfmathparse{#1}},
tick align=outside,
tick pos=left,
x grid style={darkgray176},
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xtick style={color=black},
xticklabels={},
y grid style={darkgray176},
ymin=-2.1214723, ymax=2.1962606,
ytick style={color=black},
yticklabels={}
]
\addplot [semithick, darkorange25512714, forget plot]
table {%
0 -1.5
0.4 -1.5
0.8 -1.5
1.2 -1.5
1.6 -1.5
2 -1.5
2.4 -1.5
2.8 -1.5
3.2 -1.5
3.6 -1.5
4 -1.5
4.4 -1.5
4.8 -1.5
5.2 -1.5
5.6 -1.5
6 -1.5
};
\addplot [semithick, forestgreen4416044, forget plot]
table {%
0 1.5
0.4 1.5
0.8 1.5
1.2 1.5
1.6 1.5
2 1.5
2.4 1.5
2.8 1.5
3.2 1.5
3.6 1.5
4 1.5
4.4 1.5
4.8 1.5
5.2 1.5
5.6 1.5
6 1.5
};

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legend cell align={left},
legend style={
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scaled x ticks=manual:{}{\pgfmathparse{#1}},
scaled y ticks=manual:{}{\pgfmathparse{#1}},
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tick pos=left,
x grid style={darkgray176},
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xtick style={color=black},
xticklabels={},
y grid style={darkgray176},
ymin=-2.1214723, ymax=2.1962606,
ytick style={color=black},
yticklabels={}
]
\addplot [very thin, steelblue31119180]
table {%
0 2
0.4 -1.3072872
0.8 -0.29100007
1.2 1.6877079
1.6 -1.915319
2 0.81616412
2.4 0.84835801
2.8 -1.9252117
3.2 1.6684467
3.6 -0.25592738
4 -1.3338761
4.4 1.9996866
4.8 -1.2802887
5.2 -0.32598156
5.6 1.7064402
6 -1.904826
};
\addlegendentry{CR}
\addplot [semithick, darkorange25512714, forget plot]
table {%
0 -1.5
0.4 -1.5
0.8 -1.5
1.2 -1.5
1.6 -1.5
2 -1.5
2.4 -1.5
2.8 -1.5
3.2 -1.5
3.6 -1.5
4 -1.5
4.4 -1.5
4.8 -1.5
5.2 -1.5
5.6 -1.5
6 -1.5
};
\addplot [semithick, forestgreen4416044, forget plot]
table {%
0 1.5
0.4 1.5
0.8 1.5
1.2 1.5
1.6 1.5
2 1.5
2.4 1.5
2.8 1.5
3.2 1.5
3.6 1.5
4 1.5
4.4 1.5
4.8 1.5
5.2 1.5
5.6 1.5
6 1.5
};

\nextgroupplot[
legend cell align={left},
legend style={
  fill opacity=0.8,
  draw opacity=1,
  text opacity=1,
  at={(0.97,0.03)},
  anchor=south east,
  draw=lightgray204
},
tick align=outside,
tick pos=left,
x grid style={darkgray176},
xmin=-0.3, xmax=6.3,
xtick style={color=black},
y grid style={darkgray176},
ymin=-3.3, ymax=3.3,
ytick style={color=black}
]
\addplot [very thin, steelblue31119180]
table {%
0 -3
0.4 -2.654837
0.8 -1.9294241
1.2 -0.96414749
1.6 0.074646575
2 1.0221366
2.4 1.7401633
2.8 2.136349
3.2 2.1747324
3.6 1.8769414
4 1.3144513
4.4 0.59380068
4.8 -0.16242875
5.2 -0.83562836
5.6 -1.3290308
6 -1.5808579
};
\addlegendentry{LC}

\nextgroupplot[
legend cell align={left},
legend style={fill opacity=0.8, draw opacity=1, text opacity=1, draw=lightgray204},
scaled y ticks=manual:{}{\pgfmathparse{#1}},
tick align=outside,
tick pos=left,
x grid style={darkgray176},
xmin=-0.3, xmax=6.3,
xtick style={color=black},
y grid style={darkgray176},
ymin=-3.3, ymax=3.3,
ytick style={color=black},
yticklabels={}
]
\addplot [very thin, steelblue31119180]
table {%
0 3
0.4 2.654837
0.8 1.9294241
1.2 0.96414749
1.6 -0.074646575
2 -1.0221366
2.4 -1.7401633
2.8 -2.136349
3.2 -2.1747324
3.6 -1.8769414
4 -1.3144513
4.4 -0.59380068
4.8 0.16242875
5.2 0.83562836
5.6 1.3290308
6 1.5808579
};
\addlegendentry{UC}

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legend style={
  fill opacity=0.8,
  draw opacity=1,
  text opacity=1,
  at={(0.91,0.5)},
  anchor=east,
  draw=lightgray204
},
scaled y ticks=manual:{}{\pgfmathparse{#1}},
tick align=outside,
tick pos=left,
x grid style={darkgray176},
xmin=-0.3, xmax=6.3,
xtick style={color=black},
y grid style={darkgray176},
ymin=-3.3, ymax=3.3,
ytick style={color=black},
yticklabels={}
]
\addplot [very thin, steelblue31119180, forget plot]
table {%
0 2
0.4 -1.3072872
0.8 -0.29100007
1.2 1.6877079
1.6 -1.915319
2 0.81616412
2.4 0.84835801
2.8 -1.9252117
3.2 1.6684467
3.6 -0.25592738
};
\addplot [very thin, darkorange25512714, forget plot]
table {%
2.4 0.84835801
2.8 -1.9252117
3.2 1.6684467
3.6 -0.25592738
4 -1.3338761
4.4 1.9996866
4.8 -1.2802887
5.2 -0.32598156
5.6 1.7064402
6 -1.904826
};
\addplot [semithick, forestgreen4416044, forget plot]
table {%
0 -2
0.4 -2
0.8 -2
1.2 -2
1.6 -2
2 -2
2.4 -2
2.8 -2
3.2 -2
3.6 -2
4 -2
4.4 -2
4.8 -2
5.2 -2
5.6 -2
6 -2
};
\addplot [semithick, crimson2143940, forget plot]
table {%
0 2
0.4 2
0.8 2
1.2 2
1.6 2
2 2
2.4 2
2.8 2
3.2 2
3.6 2
4 2
4.4 2
4.8 2
5.2 2
5.6 2
6 2
};
\end{groupplot}

\end{tikzpicture}
